Side bearing for railway-cars.



J. R. MHCHELL.

sms BEARING FORv RAnwAY CARS. APPLICATION FILED JUNE 9, i917.

1,290,285. Patented Jan. 7,'1919.

INVENToR. WITNESSES.- g/m IZ, )mche/l ATTORN n by suitable means, as

UNITED sTATEs PATENT oEEIoE.

JOHN E. MITCHELL, OFOHIOAGO, ILLINOIS, AssIGNOa To WILLIAM H. MINER, orl

OHAZY, NEW YORK.

Specification of Letters Patent.

Patented J an.. 7, 1919.

Application ledJune 9, 1917. Serial No. 173,879.

To all whom t may concern.'

Be it known that I, JOHN R. MITCHELL, a citizen of theUnited States, residing at Chicago, in the 'county of Cook and ,State of Illinois, have invented a certain new and useful Improvement in Side Bearings for Railway-Cars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing-s, forming a part of this specificat-ion.

My invention relates to improvements in side bearings for railway cars.

The obje-ct .of my invention is to provide a simple, eliicienit and laterally oscillatable side bearing.

In the drawing forming a part of .this specification, Figure 1 is allongitudinal vertical section of a side bearing embodying my invention. Fig. 2 is a cross section taken on the line 2'-2 of Fig. 1. Fig. 3 is an end view of the axle and surrounding parts illustrated in detail. Fig. -4 is a cross `sectional view of a modification.

In the drawings,-the numeral 10 indicates an upper or'body bolster of a railway car shown in cross section. A lower or truck bolster is shown in cross section as indicated by the numeral 11. To one of said holsters, preferably the body bolster' 11,y the side bearing 12 is secured. The hearing is provided with a base member 13 consisting of a plate 14 which is engaged tothe bolster for lnstance, the rivets 15the said base member being provided with upstanding spaced apartsides 16--16, perforated as indicated at 17, to receive. the ends of an axle 18. The ends of the axle 18,.as indicated at the numeral 19,are fiattened in order to permit their entry from above into the perforations 17 in the side walls 16 of the base. member, and when so entered the surrounding metal is in substantially the conformation shown by the dotted lines in Fig. 3 of the drawings. When in position-the said metal, by means of a suitable tool, is driven into position, as illustrated in Fig. 3 of the drawings, and gri s orclamps the ends of the axle firmly witliin the perforations 17. A roller 20 is mounted upon they axle 18, the same being preferably of a general cylindrical shape and rovided with an axial opening 21. Within said opening a sleeve 22 is mounted, the said sleeve being perforated 1ongitudinally, as indicated at 23, for the passage of the axle 18. The said sleeve 22 has a curved bearing face 24 which extends'- from end-to end of said sleeve and is adapted to be engaged by the inner similarly curved bearing face 25 surrounding the opening 21 lthrough 'the roller 20. The opening 21 is, throughout the roller, oi a larger diameterthan the largest diameter of the sleeve 22. This permits the use of a One-pie'ceintegral roller of strongconstruction and allows the entry of a sleeve having curved bearing faces therein.

When the parts are assembled as shown in Fig. 2 of the drawings, a free space, as indicated-` by the numeral 26, is formed between the bearing face of the sleeve upon one side and the adjacent inner bearing face of the roller 20. In relative movement of the holsters the opposed bolster, as for instance, the upper bolster 10, will engage'the roller and cause the same to revolve having its bearing only upon the adjacent, or as illustrated in the drawings, the upper portion ofthe sleeve, as `indicatedfby the numeral 27 in Fig. 1 of the drawings, and will revolve upon said sleeve riding free at the other portions thereof.

AUpon deection of the holsters under load the roller may oscillate laterally to accommodate its bearing face to the flat opposed bearing plate 28 upon the face of the opposed bolster 10, and its position in lateral oscillation. in one direction is indicated by the dotted lines referenced 29 in Fig. 2 of the drawings.

Thus I have provided a strong, one-piece roller adapted to oscillate laterally upon an axle which is relatively fixed, that is, which does not laterally oscillate and using a one piece sleeve insertible through the ends of the roller .and having a curved Vcontacting bearing face with `the roller to permit such lateral oscillation. In assembling the parts the sleeve is inserted in the roller and the axle mounted in the sleeve whereupon the parts thus assembled may be mounted in the base member and the axle secured therein against accidental displacement.

In the modification shown in Fig. 4 of the drawings, a bolster is indicated at the numeral 40, the base member at 41, having the bottom plate 42 suitably secured to the bolster by the rivets 43 and havmg the' upstanding sides 44 perforated as at 45, to receive the flattened ends 46 of the axle 47. A lsleeve 48 is mounted upon the axle and extends through the longitudinal opening 49 provided in the substantially cylindrical roller 50. The opening 49 at its smallest diameter is larger than the greatest diameter of the sleeve 48. The construction is the same as that shown in Figs. l, 2 and 3 of the drawings except that the sleeve has a bearing face 51 that is concave from end to end instead of convex, as'shown in the preferred form illust-rated in the other figures of the drawings, and likewise, the inner bearing face 52 ofthe roller is convex instead of concave, as shown in the preferred embodiment of my invention. In the modified form the roller may oscillate laterally upon deflection of the holsters, and one position that it may assume in such lateral oscillation is indicated by the dotted lines referenced 523 in said Fig.

t of the drawings.

In both embodiments of my invention illustrated in the drawings, the sleeve which constitutes an inner element in the roller and the said roller have inter-engaging surfaces which are curved at right angles to the outer curved surfaces of the roller.

I claim:

l. In a side bearing for railway cars, a base member, a roller associated therewith, an axle to support the roller in the base member, the roller heilig' provided with a perforation from end to end to receive the axle, the axle having a curved bearing face to permit the lateral oscillation of the roller upon the axle, the greatest diameter of the axle and said bearing face being less than the smallest diameter of the perforation in said roller.

2. In a side bearing for railway cars, a base member, a roller associated therewith` an axle to support the roller in the base member, a sleeve mounted on said axle, the

roller having a perforation to receive said axle and sleeve, the sleeve being provided with a. curved bearing face to permit the lateral oscillation of the roller thereon, the largest diameter of said sleeve being less than the smallest diameter of the perforation in the roller.

3. In a side bearing for railway cars, in combination: a base member; a one-piece roller associated therewith; an axle to support the roller in the base member; the axle being provided with a curved bearing face, the roller having a perforation to receive t-he axle and having an internal curved bearing face to engage the axle, the said axle being insertible through the ends of the roller, the roller having lateral oscillating movement upon said axle.

4. In a roller side bearing for railway cars, the combination of a member adapted to be secured to a bolster or the like, of a supporting axle carried by said member. an inner element'mounted on said axle, a roller rotatable on said element, said element and roller having engaging surfaces curved at right angles to the curved surface of the roller to permit the lateral oscillation of the roller thereon.

5. In a roller side bearing for railway cars, the combination of a member adapted to be secured to a bolster or the like, of a supporting axle carried by said member, an inner element mounted on said axle, a roller rotatable on said element, said element and roller having engaging surfaces curved at right angles to the curved surface of the roller to permit the lateral oscillation of the. roller thereon` one of said engaging surfaces being concave and the other convex.

6. In a roller side bearing, in combination: a member adapted to be secured to a bolster or the like; a supporting axle carried by said member; inner and outer rollers rotatably mounted on said axle: said rollers having engaging surfaces curved about axes at right angles to the axes of the rollersl and being rotatable relatively to each other.

7. In a side bearing, in combination: a member adapted to be secured to a bolster or the like; a supporting axle carried by said member; an inner rotatable member carried on said axle: an outer rotatable member carried on said inner member and rotatabh` thereon; the inner member being loosely received in the outer member and one of said members having a curved face engaging the other of' said mtanbcrsl to permit; the lateral oscillation of the outer member in reference to the axle.

In witness that I claim the foregoing I have hereunto subscribed my name this 19th day of May. 1917.

JOHN R. MITCHELL. 

